{
\def\sym#1{\ifmmode^{#1}\else\(^{#1}\)\fi}
\begin{tabular}{l*{8}{c}}
\hline\hline
                    &\multicolumn{1}{c}{(1)}         &\multicolumn{1}{c}{(2)}         &\multicolumn{1}{c}{(3)}         &\multicolumn{1}{c}{(4)}         &\multicolumn{1}{c}{(5)}         &\multicolumn{1}{c}{(6)}         &\multicolumn{1}{c}{(7)}         &\multicolumn{1}{c}{(8)}         \\
\hline
Basis Spread 1M-3m  &                     &       0.496\sym{***}&       0.232         &       0.265         &       0.303         &       0.500\sym{***}&       0.237         &       0.300         \\
                    &                     &     (0.169)         &     (0.234)         &     (0.207)         &     (0.198)         &     (0.186)         &     (0.259)         &     (0.225)         \\
[1em]
Spot Basis 3m       &                     &                     &                     &      0.0973\sym{**} &       0.123\sym{**} &                     &                     &      0.0950\sym{**} \\
                    &                     &                     &                     &    (0.0384)         &    (0.0608)         &                     &                     &    (0.0384)         \\
[1em]
Constant            &      0.0622\sym{***}&                     &      0.0502\sym{**} &                     &     -0.0189         &                     &      0.0500\sym{**} &                     \\
                    &    (0.0125)         &                     &    (0.0206)         &                     &    (0.0237)         &                     &    (0.0211)         &                     \\
\hline
rmse                &       0.140         &       0.145         &       0.139         &       0.135         &       0.136         &       0.145         &       0.138         &       0.134         \\
r2u                 &                     &                     &                     &                     &                     &       0.104         &       0.183         &       0.226         \\
widstat             &                     &                     &                     &                     &                     &       181.5         &       103.3         &       140.1         \\
exexog              &                     &                     &                     &                     &                     &lag\_basis\_spread         &lag\_basis\_spread         &lag\_basis\_spread         \\
Observations        &         126         &         126         &         126         &         126         &         126         &         126         &         126         &         126         \\
\hline\hline
\multicolumn{9}{l}{\footnotesize Standard errors in parentheses}\\
\multicolumn{9}{l}{\footnotesize \sym{*} \(p<0.1\), \sym{**} \(p<0.05\), \sym{***} \(p<0.01\)}\\
\end{tabular}
}
